Heat-exchange apparatus



llt'atented Airplay l, Attimi.

FEUMlElEt l. S'lllElElEA, OIF CHACAGO, ILLENOJEF.

JHEFAT-FHCHANGJE APPARATUS.

Application led August u, 1921: Serial No. 4:90AM.

'To all whom t may concern.'

`Be it known that l, l-loiunn il. STEFFA,

a citizen of the United States, residing at A25 N. Central Ave., Chicago, in the county 5 of Cook and @tate of illinois, have invented certain nevi7 and useful llmproveinents in ltleat-Exchange Apparatus; and it do hereby declare the following to be a full, clear, and enact description of the invention, such as m will enable others skilled in the art to which it appertains to make and use the same, ref'- erence being had to the accompanying drawings, and tothe letters of reference marked thereon forming part of thisl specification. "Fhis invention relates to heat enchange apparatus and the object thereof is to provide inea'ns vvhereby the fluid to be heated or cooled is caused to flow both longitudinally and transversely through a chamber',

im, through which tubes entend, which tubes conduct the heating or cooling fluid through said chamber, so that the fluid to be heated or cooled Will absorb heat from, or give up heat to the tubes.

Plhe features of my invention are hereinl after fully set forth and described, and are iliustrated in the accompanying drawings, in vvhich:--

Figure l, is a side view of my improved so apparatus 1with a portion of the shell there of broken away, showing the internal arrangement thereof in longitudinal section. Figure 2, is an end view of the saine on the line 2-2 in Fig. 1with the end. plate thereof removed.

Figure 3, is a transverse section of the saine on the line 3-3 in Fig. l. Figure A, is a plan .view of one of the transverse partition Walls shown in section tu in Fig.. l. Figure 5, is an edgevvise view of a' pair of said plates looking in the direction of the arrovv in Fig. s

Figure ti, is an enlarged detail showing A5 the means of securing tubes 'in my in'iproved apparatus.

lin these drawings .A indicates a cylindrical shell having llanges A" on the ends thereof, and "tubular inlet and outlet litt branches AA and A.a adjacent to the ends thereof.

yFlhttiin the .shell A. is arranged a series of transverse plates itl `(see Fig. il which -posite tubular ends ofthe tubes through saidhcaders E,

are' provided on both sides with ribs B the edges of which meet each other as Shown in Figs. l and 5, Each one of the plates B has a portion of its periphery cut out as shown in Fig. l, which leaves a notch B2, through which fluid can HOW from one side of said plate to the other.

When placed in position in the shell A, as shown in Fig. l, the notch B2 of each alternate plate B is at the bottom, as shown in Fig. A, and atthe top of each intermediate plate, as indicated in Fig. 5. lt will be seen that Huid entering the tubular opening A2 Will pass through the notch B2 of will@ lthe first plate B, and then pass successively around the ends of the ribs B', and then pass through the notch B2 of the next plate, and so on until it has traveled transversely and longitudinally the entire length of the shell A, and is discharged through the oppening A5. The plates are each provided with circular holes through which longitudinal tubes C are passed, .the ends of said tubes C being secured in plates l) which lit against the flanges A of the shell A.' rlhese tubes are secured in the plates D in any suitable manner; but it is preferable to use the type of fastening used in Fig. 6, which consists in counter-boring and tapping the tube opening in the plate D, and then placing a suitable packing d therein and providing an externally 'threaded= gland d', which is adapted to be secured into said counterbored opening around thcend of the tube C so as to compress the packing d therein. VFhis provides a very efficient fastening, which, While maintaining a .tight joint bctween the plate D and tube C, allows of a suflicient relative movement of the tube C and plate D to compensate for differences in expansion. "i

Against the plates l) at e'ach end of the shell A, l place hollow headers E which are providedwith circular openings on each face thereof so that access )nay be had to the :1s illustrated in F ig, 2. rFliese headers E are also vprovided with inlet and outlet openings F2 and F. The outer face of the head` ers is covered with a plate F3, so that tluid entering the inlet F12 at the left hand end of the apparatus will flow through the :ail

tubes C into the header at the right hand,

and out through the opening E. In operation, Huid to be treated is introduced into the shell A through the inlet opening A2, and therefrom it enters suc- Cessivelvthel spaces between the transverse plates I3 and flows transversely around the ends'of the flanges B of said plates B until it is discharged through the tubular opeiiing A3. The heating or cooling fluid en the inlet branch E2 at the left hand, an 'l flows through the tubes C into the header E at the right vhand and out through the opening E so that the heating fluid in the pipes will contain more heat at the left hand end, where the contents of the shell A is the hottest, than at the right hand of the apparatus Where the material to be'heated has just entered. v

It will be obvious from the foregoing description of the construe-tion and operation of this apparatus, that it can be used with equal facility in either heating or cooling the contents of the shell A.

Having thus fully shown andhdeseribed my invention so that others can utilize the same, what I claim as new and desire to secure by Letters Patent is:

1..In an apparatus of the class described, a casing having inlet and outlet openings at opposite ends thereof, a serieu of trans verse walls therein, each wall having an opening through which fluid may flow, the

said openings being located alternately in' the top and bottom of the walls, staggered horizontal partitions between said transverse walls, a series of longitudinal tubes passing through said casing and through said transverse walls, and secured in plates on the ends of said casing, and header chambers on the ends of said easing eovering the ends of said tubes.

2. In an apparatus of the class described, I 

